should have done中的have done 是什么?这里的have done 是什么?是不定式的完成时吗?如果是的或,那to哪里去了?我的印度英语老师在给解释的时候曾经说should 后面的have done 是infinitive perfect .我也记得

should have done是什么意思? Could have done would have done should have done 虚拟语气中的would/conld/should do/have done 与 did/had done有何区别 should have done与should have been done的区别? should have done 和should not have done的区别 should ought to have done would have done,might have done,could have done,should have done分别表示什么意思? should have done ,shouldn't have done.could have done,couldn't have done should have done 可以换成 ought to have done嘛? would rather have done 与should have done 的区别 should have done和could have done的区别? 英语：should have done与could have done区别? should have done 和have done有什么区别 英语 would have done 和should have done 的用法 should have done与would have done有区别吗? should have done和 would have done是什么意思 should have done与would have done有区别吗? we fell you should not have done thatWe feel you should not have done that.这句中的feel是什么意思,什么用法~